Pipe joint and method of making the same



Patentea Jan. s, 1929. 1,698,034 UNITEDSTATES PATENT oFFlcE.

HENRY A. STRINGFELLOW, OF AKRON, OHIO, ASSIGNOR TO THE BIGGS I-BOILER WORKS COMPANY, OF AKRON, OHIO, A CORPORATION OF OHIO.

PIPE lJ'OIN'I1 AND METHOD 0F MAKING THE SAME.

Application Hed March 26 1927. Serial No. 178,599.

This invention relates to a new and imeither side thereof, and is formed on its outprovedform of joint or connection for pipes er edge with 'a beveled or conical surface 5 and particularly to awelded, leak-proof joint, which permits caulking about theL edge 5 which is adaptable for installation in the \after the pipe is riveted or welded together field. The object of the invention is to lrnby the principal or primary'welding operaprove upon former joints of this character so tion.- The abutting ends ofthe pipes 1 and 2 as to make itpractical to secure a satisfacmay be connected by a caulking weld 6. tory joint while the pipe sections are being About the lower semi-circumference of the laid with a minimum of expense. pipe 2 which may be designated as the en- It is also an object of the invention to so tering pipe, or the male member of the joint, construct and design the pipe joint that it can are formed a plurality of recesses or rivet be easily perfectedwithout danger or injury openings 8, and about the upper semi-cirto the workmen and without possible loss and cumference of the band 3 or female member Iwaste due to faulty construction. With the or receiving member of the joint are formed usual form of connection for the pipe ends a plurality of similarly spaced and located the results have not been uniformly satisrecesses or rivet openings 9. When the pipe factory from a standpoint of economy and ends are assembled the respective series of eliciency and it is the purpose of the present openings are closedl on their lower sides by invention to devise a form of pipe connection the other member of the pipe coupling. which will obviate the diiiiculties experienced When the joint is to be made the ipe 1 heretofore.' i K is a part of the permanent line or is a ready In the drawings, the preferred or best installed in position, usually in the ditch or known embodiment of the invention is shwn, trench. v The pipe end 2 is then inserted withbut it will be appreciated that, having exin the strap or butt end of the pipe l and plained the invention in such manner that the caulking joint 6 is completed. The holes it may bepractised by those skilled in the 8 are now filled up by the welds or rivets 10, art, changes, modifications or improvements the operator working from the inside of the may be suggested which fall within the scope pipe. The form of connection is known in of the invention, and with a fair interpretathe trade as an electric rivet, it being untion of the claims in the light of the prior art. derstood that this is a welded connection in In the drawings: which the openings 8 are filled with metal Figure l is a side elevation of a pipe joint fused and welded to the adjacent pipe surmade by the process and embodying the feafaces by an electric arc. As the lower half tures of the invention, the lower portions of of the pipe is welded in this manner from the pipe being shown in section; and within the pipe, the welding operation is Figure 2 is a cross section on the line 2-2 downwardly and can,A therefore, be closely of Figure l. l observed and inspected by the Workman, and

Two abutting ends of pipes or pipe lengths at the same time there is no danger of the are indicated at 1 and 2. These pipes may be molten metal dropping out Aof the opening. of any size or shape, but to practise the in- After'the rivets are completely installed the -vention in the preferred or best known manworkman may finish or dress the rivets. ner, the pipe should be large enough to ad- The upper half of the rivets, indicated mit a workman inside thereof. The pipes by the V numeral 12 lying in the base at are laid at the location, usually in a trench. the top of the pipe are then riveted or welded To one end of each pipe, here shown as the in the same manner, the workman in this case 100 pipe 1, is welded or otherwise securely fasoperating from above the pipe and the opertened a permanent flange in the form of a ations of4 welding and the results being butt strap 3, the connection of the butt strap watchedin the same manner. If will be obto one end of the pipe being done at the facserved that by the division of the riveting tory or in the shop before the pipe is delivbetween the inner and outer surfaces of the 105 ered to its location. It is conceivable that pipe in the manner described, the entire the butt strap may be made as an integral riveting process takes place downwardly and part of the pipe. none takes place overhead, with the beneficial The butt strap projects beyond the end of results indicated and this entire operation the pipe, preferably to the same distance at may be performd without enlarging the 110 trench about the joint as was necessary with former methods.

In order to insure a perfect joint, or to repair leaks or defects arising after the welding operations described, the pipe joint may be subsequently welded or caulked about the edge 5. rlhis operation, however, is not necessary at all times, but may be used as a precautionary or repair expedient. It is the intention to rely upon the welding through thel holes and the spacing and pitch of the rivets for the strength in design. The location and design of the rivets may be modiiied or changed depending upon the thickness of the plates and the pressure to be withstood. rlhe may be connected to the butt strap in the manner described but the already welded butt strap is preferable for obvious reasons. 111 repairing a joint of this form it is not necessary to disturb any portion of the welding or to de-water the pipes.

-What is claimed is :l

l. The method of joining pipes comprising bringing two pipe ends into horizontal alignment with the end of one pipe lying Within the other pipe end, providing openings in the` lower halic of the rst pipe end and openings in the upper half of the other pipe end, and welding the pipes together through the openins.

The method of joining pipes comprising bringing two pipes in horizontal alignment,

one pipe end being a `male and the other a female, providing openings in the lower halt of the male pipe and in the upper half of the female pipe, and permanently connecting the pipes together from the interior of the pipe through an opening in the male and from the exterior of the pipethrough an opening in the female.'

HENRY A. STRlNGFELLW. 

